Journal
RSC ADVANCES
Volume 7, Issue 2, Pages 861-869Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra26084e
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Funding
- National Natural Science Foundation of China [51303012]
- International Science & Technology Cooperation Program of China [2014DFA52900]
- Nation High Technology Research and Development Program of China (863 Program) [2013AA032003]
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Polyamide 6 (PA6) was flame retarded by using interdigitated crystalline montmorillonite-melamine cyanurate (MMT-MCA). Its morphologies were assessed by using X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM), thermal stability by thermo-gravimetric analysis (TGA), fire retardancy by limiting oxygen index (LOI), vertical burning testing (UL-94), and cone calorimeter (CONE) tests and mechanical properties by stress strain tests. The results indicated that the interdigitated crystalline MMT-MCA was homogeneously nano-dispersed as MMT and MCA in PA6 due to a p-p stacking exfoliation mechanism. Compared with PA6/ MCA and PA6/OMMT/MCA, PA6/ MMT-MCA shows enhanced thermal stability and fire retardancy. With 8 wt% total loading of MMT-MCA, the sample of PA6/ MMT-MCA reached UL-94 V-0 rating (3.2 mm). The MMT-MCA can also enhance the mechanical properties of PA6.
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